base-station: Return the local time for ValueType::Time requests.

base-station/software/Cargo.lock

@@ -26,10 +26,17 @@ dependencies = [
  "winapi 0.3.8",
 ]
 
+[[package]]
+name = "autocfg"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8aac770f1885fd7e387acedd76065302551364496e46b3dd00860b2f8359b9d"
+
 [[package]]
 name = "base-station"
 version = "0.1.0"
 dependencies = [
+ "chrono",
  "embedded-hal",
  "embedded-nrf24l01",
  "env_logger",
@@ -92,6 +99,17 @@ version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
 
+[[package]]
+name = "chrono"
+version = "0.4.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "80094f509cf8b5ae86a4966a39b3ff66cd7e2a3e594accec3743ff3fabeab5b2"
+dependencies = [
+ "num-integer",
+ "num-traits",
+ "time",
+]
+
 [[package]]
 name = "crc16"
 version = "0.4.0"
@@ -338,9 +356,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.68"
+version = "0.2.70"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dea0c0405123bba743ee3f91f49b1c7cfb684eef0da0a50110f758ccf24cdff0"
+checksum = "3baa92041a6fec78c687fa0cc2b3fae8884f743d672cf551bed1d6dac6988d0f"
 
 [[package]]
 name = "linux-embedded-hal"
@@ -479,6 +497,25 @@ dependencies = [
  "void",
 ]
 
+[[package]]
+name = "num-integer"
+version = "0.1.42"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f6ea62e9d81a77cd3ee9a2a5b9b609447857f3d358704331e4ef39eb247fcba"
+dependencies = [
+ "autocfg",
+ "num-traits",
+]
+
+[[package]]
+name = "num-traits"
+version = "0.2.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c62be47e61d1842b9170f0fdeec8eba98e60e90e5446449a0545e5152acd7096"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "num_cpus"
 version = "1.13.0"
@@ -796,6 +833,16 @@ dependencies = [
  "lazy_static",
 ]
 
+[[package]]
+name = "time"
+version = "0.1.43"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca8a50ef2360fbd1eeb0ecd46795a87a19024eb4b53c5dc916ca1fd95fe62438"
+dependencies = [
+ "libc",
+ "winapi 0.3.8",
+]
+
 [[package]]
 name = "tokio"
 version = "0.2.20"

base-station/software/Cargo.toml

@@ -22,6 +22,7 @@ futures = "0.3.5"
 futures-util = "0.3.5"
 nb = "0.1.2"
 gpio-cdev = { git = "https://github.com/mgottschlag/gpio-cdev", branch = "tokio", features = [ "async-tokio" ] }
+chrono = "0.4.11"
 
 [patch.crates-io]
 sysfs_gpio = { git = "https://github.com/mgottschlag/rust-sysfs-gpio", branch = "new-futures" }

base-station/software/src/main.rs

@@ -6,8 +6,9 @@ use std::env;
 use std::sync::Arc;
 use std::time::{Duration, Instant};
 
+use chrono::offset::Local;
 use log::{error, info};
-use protocol::{GetValues, Packet, Report, Value, Values};
+use protocol::{GetValues, Packet, Report, Value, ValueType, Values};
 use rand::{rngs::ThreadRng, Rng};
 use tokio::sync::Mutex;
 use tokio::time::delay_for;
@@ -153,7 +154,13 @@ impl Application {
             values: [Value::Invalid; 8],
         };
         for i in 0..count {
-            match self.current.get(request.location, request.types_[i]) {
+            if request.types[i] == ValueType::Time {
+                response.values[response.count as usize] =
+                    Value::Time(Local::now().naive_local().timestamp() as u64);
+                response.count += 1;
+                continue;
+            }
+            match self.current.get(request.location, request.types[i]) {
                 Some(value) => {
                     // During deserialization, we made sure that count can never be larger than 7.
                     response.values[response.count as usize] = value;